3: Add water of Ingredient 3) (Picture 3) and reduce heat to medium. Stir and cook for 3-4 minutes, until beans become fully cooked and soft. Add Oyster sauce (Best to use this brand)(Picture 4), and other ingredients of Ingredient 3) (Picture 5). Stir and cook until sauce thickened.
4: Finally add 1 tsp sesame oil. Stir to mix, then transfer to a serving plate.